1
What is the kinetic energy of a 100Kg man running at 4m/s?
800J
What is the elastic energy of a spring with a spring constant of 250N/m when it is stretched by 50cm?
31.25J
What unit do we use for gravitational field strength?
N/Kg
What is the increase in GPE when an 80Kg woman climbs a 4m flight of stairs? g = 9.8N/Kg
3136J
What is the kinetic energy of a 40Kg boy running at 5m/s?
500J
What is the kinetic energy of a 2000Kg car driving at 20m/s?
400 000J
What is the elastic energy of a car spring with a spring constant of 100 000N/m when it is squashed by 0.05m?
125J
What is the increase in GPE when an 1800Kg lift goes up a 80m building? g = 9.8N/Kg
1411200J
What is the elastic energy of a rubber band with a spring constant of 50N/m when it is stretched by 0.1m?
0.25J
What does N/Kg x Kg x m =?
N/m
A N/m = 1 Joule
What is the speed of a truck that has a mass of 6000Kg if it has 800 000J of kinetic energy?
16.3m/s
How fast does a 2Kg brick falling from 2m travel when it hits the floor?
6.26m/s
What is the spring constant of a spring that when stretched by 0.2m has 5J of elastic energy?
250N/m
How far up would a slingshot with a spring constant of 400N/m fire a 25g stone if it is stretched by 40cm?
130.6m WOW
A 1600Kg car is travelling at 12m/s. It drives up a hill. How high will it go?
7.34m